Fade to Black Effect in Video Sequence editor?
Fading to black is slightly more complicated than it has to be. The trick is to use the cross effect.


Add your video clip
Add a color strip (under Effect Strip > Color), the default is black, so leave it at that. Position the color strip at the end of the video clip.
Select your video strip then the color strip (Make sure to do it in that order. The cross effect will fade to whichever clip is selected last)
Add a cross effect
Play the animation.